#!/bin/bash

problems=()

ejecucion_lenta () {
    mem_ava=$(cat /proc/meminfo | grep MemAvailable | awk '{print $2}')

    free_space_root=$(df -h | awk '
        $6=="/" {
            print $4
        }
    ')

    free_space_root_h=$free_space_root

    free_space_root=${free_space_root/K/000}
    free_space_root=${free_space_root/M/000000}
    free_space_root=${free_space_root/G/000000000}
    free_space_root=${free_space_root/T/000000000000}

    # menos de 4Gb libres en /
    [[ $free_space_root -le 40000000000 ]] && problems=("Poco espacio ($free_space_root_h) en partición root")

    # Menos de 150Kb libres de RAM
    [[ $mem_ava -le 150000 ]] && problems=("Memoria disponible insuficiente ($mem_ava kb)")
}

ejecucion_lenta

for i in "${problems[@]}"; do
    echo $i
done